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Typically Old Faithful erupts every 90 minutes or so. This can vary from 45 minutes to as long as 125 minutes. Currently the most common range is 65 to 92 minutes apart.
http://wiki.answers.com/Q/How_many_times_does_Old_Faith...
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Seats on the benches around the geyser are often hard to find anytime near the predicted eruption time. It hard to say whether geyser watching or people watching is the best thing to do. Both are fun and I mix a little of both into my visit to Old Faithful.
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www.wyojones.com/oldfaith.htm
www.wyojones.com/oldfaith.htm
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How often does Old Faithful erupt? In 2003, the average interval between eruptions was about 93 minutes, but the range is from 55 to 118 minutes. The interval has lengthened from the 60 to 65 minutes recorded by early visitor Nathaniel Langford in 1870.
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www.yellowstonetreasures.com/nugget2.htm
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Eruptions often occur about 90 minutes apart, but this interval can range from 45 to 125 minutes on occasion.Over the years, the length of the interval has increased, which may be the result of earthquakes affecting subterranean water level...
http://answers.yahoo.com/question/index?qid=20090611200...
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Old Faithful erupts about every 92 minutes plus or minus about 10 minutes. In 1959, the interval between eruptions changed due to a nearby earthquake. That interval has changed from roughly 6 minutes between eruptions before the earthquake ...
http://www.naturalsciences.org/microsites/education/Yel...
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Only six grand geysers, those which erupt 100 feet or higher on a predictable daily basis, exist. Old Faithful, the most famous of these, erupts once approximately every 45 to 90 minutes. ... Black pools are often lined with orange-colored bacteria which coupled with blue tinted water, results in pools dark-colored in...
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www.yellowstonenationalpark.com/geysers.htm
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Thousands of visitors each year partake of the spatial experiences of walking under the porte-cochere, into the rustic lobby, up on the balconies, and out on the porch to watch Old Faithful erupt. Most do not stay at the Inn;
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www.cr.nps.gov/history/online_books/harrison/harrison3....
www.cr.nps.gov/history/online_books/harrison/harrison3.htm
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Qtargets used in Webclopedia; ... USC Information Sciences Institute ... C-FREQUENCY-QUANTITY - How often does Old Faithful erupt at Yellowstone National Park?
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www.isi.edu/natural-language/projects/webclopedia/Taxon...
www.isi.edu/natural-language/projects/webclopedia/Taxonomy/taxonomy_toplevel.html
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Yellowstone National Park Geyser Information ... Rangers often route their "geyser walks" so that you will get to see some geysers erupt. You can find out about scheduled walks at the Old Faithful Visitor Center.
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www.yellowstone-natl-park.com/geyser.htm
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